- visualframework_src.zip
- sample
- CNN
- cls.cls
- MSSCCPRJ.SCC
- PrjCnn.dll
- PrjCnn.exp
- PrjCnn.lib
- PrjCnn.vbp
- PrjCnn.vbw
- DemoDoc
- MfcViewLib
- ObjManager
- VbComLib
- VBDoc
- MSSCCPRJ.SCC
- prjVBDoc.vbp
- prjVBDoc.vbw
- UD.dob
- VCSharpComLib
- VisualFrameWork
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// DialogMessageHook.cpp: implementation of the CDialogMessageHook class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "DialogMessageHook.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
HHOOK CDialogMessageHook::m_hHook = NULL;
THWNDCollection CDialogMessageHook::m_aWindows;
// Hook procedure for WH_GETMESSAGE hook type.
//
LRESULT CALLBACK CDialogMessageHook::GetMessageProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// If this is a keystrokes message, pass it to IsDialogMessage for tab
// and accelerator processing
/*
LPMSG lpMsg = (LPMSG) lParam;
if ((nCode >= 0) &&
PM_REMOVE == wParam &&
(lpMsg->message >= WM_KEYFIRST && lpMsg->message <= WM_KEYLAST))
*/
LPMSG lpMsg = (LPMSG) lParam;
if ((nCode >= 0) && PM_REMOVE == wParam &&(lpMsg->message == WM_KEYDOWN &&lpMsg->wParam == VK_TAB))
{
HWND hWnd, hActiveWindow = GetActiveWindow();
THWNDCollection::iterator it = m_aWindows.begin();
// check each window we manage to see if the message is meant for them
while (it != m_aWindows.end())
{
hWnd = *it;
if (::IsWindow(hWnd) &&
::IsDialogMessage(hWnd, lpMsg))
{
lpMsg->hwnd = NULL;
lpMsg->message = WM_NULL;
lpMsg->lParam = 0L;
lpMsg->wParam = 0;
break;
}
it++;
}
}
// Passes the hook information to the next hook procedure in
// the current hook chain.
return ::CallNextHookEx(m_hHook, nCode, wParam, lParam);
}
HRESULT CDialogMessageHook::InstallHook(HWND hWnd)
{
// make sure the hook is installed
AFX_MODULE_STATE* pModuleState = AfxGetModuleState();
if (m_hHook == NULL)
{
m_hHook = ::SetWindowsHookEx(WH_GETMESSAGE,
GetMessageProc,
pModuleState->m_hCurrentInstanceHandle,
GetCurrentThreadId());
// is the hook set?
if (m_hHook == NULL)
{
return E_UNEXPECTED;
}
}
// add the window to our list of managed windows
if (m_aWindows.find(hWnd) == m_aWindows.end())
m_aWindows.insert(hWnd);
return S_OK;
}
HRESULT CDialogMessageHook::UninstallHook(HWND hWnd)
{
HRESULT hr = S_OK;
// was the window found?
if (m_aWindows.erase(hWnd) == 0)
return E_INVALIDARG;
// is this the last window? if so, then uninstall the hook
if (m_aWindows.size() == 0 && m_hHook)
{
if (!::UnhookWindowsHookEx(m_hHook))
hr = HRESULT_FROM_WIN32(::GetLastError());
m_hHook = NULL;
}
return hr;
}
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